The answer is to investigate the device and the alert details first. This is the correct first step when reviewing a security alert in Microsoft Defender for Endpoint because the primary goal is to understand the scope and validity of the threat before taking any disruptive action. Initiating isolation or running a scan without investigation risks alert fatigue or unnecessary system downtime, while marking an alert as a false positive requires evidence gathered during the investigation. On the Microsoft Security Operations Analyst SC-200 exam, this concept tests your understanding of the incident response lifecycle, specifically the triage phase, where analysis precedes containment. A common trap is jumping to remediation actions like isolation, but the exam emphasizes that investigation is the foundational step to avoid misconfiguration or missed lateral movement. Remember the mnemonic “Investigate Before You Isolate” to keep the correct sequence clear.
SC-200 Respond to security incidents Practice Question
This SC-200 practice question tests your understanding of respond to security incidents. Read the scenario carefully and evaluate each option against the stated constraints before committing to an answer. After answering, compare your reasoning against the explanation and wrong-answer breakdown below. Once you have made your selection, read the full explanation to reinforce the concept and understand why each distractor is designed to mislead on exam day.
Exhibit
Refer to the exhibit.
```
DeviceName: DESKTOP-ABC123
AlertTime: 2025-03-01T14:32:00Z
AlertTitle: Malware detected
Severity: High
Status: Active
```
Refer to the exhibit. You are reviewing an alert in Microsoft Defender for Endpoint. The alert details are shown. Which of the following actions should you take first?
Clue words in this question
Noticing these words before you look at the options changes how you read each choice.
Clue: "first"
Why it matters: Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Investigate the device and the alert details
The correct answer is A because the first step is to investigate the alert to understand the scope. Option B is wrong because initiating isolation without investigation may be premature. Option C is wrong because running a scan is a later step. Option D is wrong because marking as false positive requires investigation first.
Key principle: Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
✓
Investigate the device and the alert details
Why this is correct
Investigation is the first step.
Clue confirmation
The clue word "first" in the question point toward this answer.
Related concept
Read the scenario before looking for a memorised answer.
✗
Mark the alert as a false positive
Why it's wrong here
False positive requires investigation first.
✗
Initiate device isolation to contain the threat
Why it's wrong here
Isolation should follow investigation.
✗
Run a full antivirus scan on the device
Why it's wrong here
Scan is a later step.
Common exam traps
Common exam trap: answer the scenario, not the keyword
Many certification questions include familiar terms but test a specific constraint. Read the exact wording before choosing an answer that is generally true but wrong for this case.
Detailed technical explanation
How to think about this question
This question should be treated as a scenario, not a definition check. Identify the problem, the constraint and the best action. Then compare each option against those facts.
KKey Concepts to Remember
Read the scenario before looking for a memorised answer.
Find the constraint that changes the correct option.
Eliminate answers that are true in general but not in this case.
Use explanations to understand the rule behind the answer.
TExam Day Tips
→Underline the problem statement mentally.
→Watch for words such as best, first, most likely and least administrative effort.
→Review why wrong options are wrong, not only why the correct option is correct.
Key takeaway
Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option.
Real-world example
How this comes up in practice
A cloud solutions architect for a retail company is evaluating services for a new workload. The correct answer here reflects best practice for the specific scenario described — not a general cloud recommendation. Answer the scenario, not the keyword: identify the specific constraint before choosing the most familiar-sounding option. Cloud exam questions reward reading the constraint carefully: the same technology can be right or wrong depending on the use case.
Related glossary terms
Concepts from this question explained
These glossary pages explain the core terms tested in this SC-200 question in full detail.
Identify which SC-200 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Respond to security incidents — This question tests Respond to security incidents — Read the scenario before looking for a memorised answer..
What is the correct answer to this question?
The correct answer is: Investigate the device and the alert details — The correct answer is A because the first step is to investigate the alert to understand the scope. Option B is wrong because initiating isolation without investigation may be premature. Option C is wrong because running a scan is a later step. Option D is wrong because marking as false positive requires investigation first.
What should I do if I get this SC-200 question wrong?
Identify which SC-200 exam domain this question belongs to, then review the specific concept being tested. Practise related questions in that domain and focus on understanding why each wrong answer is tempting — not just why the correct answer is right.
Are there clue words in this question I should notice?
Yes — watch for: "first". Order matters here. You are being tested on which action comes before the others — not which action is generally useful.
What is the key concept behind this question?
Read the scenario before looking for a memorised answer.
About these practice questions
Courseiva creates original exam-style practice questions with explanations and wrong-answer analysis. It does not publish real exam questions, exam dumps, or protected exam content. Learn why practice questions differ from exam dumps →
These questions test the same concept from different angles. Work through them to make sure you can recognise it however the exam phrases it.
Variation 1. A security analyst receives an alert from Microsoft Defender for Identity about a suspicious Kerberos ticket request. What is the first step the analyst should take?
easy
A.Disable the user account
B.Reset the user's password
C.Run a full antivirus scan on the user's device
✓ D.Validate the alert by checking the user's recent activity
Why D: Option B is correct because validating the alert confirms if it is a true positive before taking action. Option A is wrong because disabling the user is premature. Option C is wrong because resetting the password may alert the attacker. Option D is wrong because running a scan may not be relevant.
Last reviewed: Jun 21, 2026
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